Groundwater Sustainability Plans

The Sustainable Groundwater Management Act (SGMA) requires local public agencies and Groundwater Sustainability Agencies (GSAs) in high- and medium-priority basins to develop and implement Groundwater Sustainability Plans (GSPs) or Alternatives to GSPs. GSPs are detailed road maps for how groundwater basins will reach long term sustainability.


Although local public agencies in basins designated as low and very-low priority are not subject to SGMA, we encourage them to form GSAs and develop GSPs, update existing groundwater management plans, or coordinate with others to develop a new groundwater management plan in accordance with Water Code Section 10750 et seq. More information can be found on the Non-SGMA Groundwater Information page.

Prior to initiating the development of a Groundwater Sustainability Plan (GSP), a Groundwater Sustainability Agency (GSA) shall make available to the public and the Department a written description of the manner in which interested parties may participate in the development and implementation of the GSP. The Department's GSP Emergency Regulations require an initial notification per §353.6(a):

"Each Agency (GSA) shall notify the Department, in writing, prior to initiating development of a Plan (GSP). The notification shall provide general information about the GSA’s process for developing the GSP, including the manner in which interested parties may contact the GSA and participate in the development and implementation of the GSP. The GSA shall make the information publicly available by posting relevant information on the GSA’s website."

In accordance with Water Code §10727.8, GSAs are required to provide the GSP initial notification written statement to the legislative body of any city, county, or city and county, located within the geographic area to be covered by the GSP to coordinate land use and water management planning. In addition, if the geographic area to be covered by the GSP includes a public water system regulated by the Public Utilities Commission, the GSA shall provide the written statement to the commission.

Related to the GSP initial notification is a “maintenance of interested persons list” which is described in Water Code §10723.4. A GSA is required to establish a list of persons interested in receiving notices – any person may request, in writing, to be placed on the list of interested persons. Also, GSAs are required to encourage the active involvement of diverse social, cultural, and economic elements of the population within the groundwater basin prior to and during the development and implementation of the GSP.

Beginning January 19, 2018, GSAs are required to submit all applicable GSP notification information to DWR using the SGMA Portal – GSP Initial Notification System.

 GSP Initial Notification System                    GSP Initial Notification Map Viewer
GSP Initial Notification 

   GSP Initial Notification
Map Viewer
GSP Initial Notification FAQ Cover
GSP Initial Notification FAQ ( PDF) | (Publish Date:
The purpose of this frequently asked questions document is to inform groundwater sustainability agencies (GSAs) about the groundwater sustainability plan (GSP) initial notification requirements, as described in the Sustainable Groundwater Management Act (SGMA) and the GSP Regulations. Additional details are also provided in this document regarding coordination agreements and the identification of a plan manager, as well as a basin-wide point of contact if multiple GSPs are expected.

Per Water Code §10733.4 and GSP Regulations §353.2, the Department of Water Resources (DWR) developed an online tool for the submission of GSPs.

DWR hosted two workshops and a webcast to provide an overview of the online GSP Reporting System in August 2019. The webcast is available below under Resources and Guidance.

Additional materials detailing the step-by-step process for submitting a GSP online through the GSP Reporting System will be released in early fall of 2019 with the deployment of the online system.

Resources and Guidance

Groundwater Sustainability Plan (GSP) Reporting System Workshop Video

The Department of Water Resources (DWR) video of the Groundwater Sustainability Plan (GSP) Reporting System Workshop webcast will assist those submitting GSPs. It includes information on the updated SGMA Portal, provides an overview of the new online GSP Reporting System and Monitoring Network Module, and answers questions submitted during the live webcast.

For questions regarding the webcast, please email


For questions about the online GSP Reporting System, please email Heather Shannon at

For questions about the Monitoring Network Module, please email Benjamin Gooding at

Information on alternatives can found on the new alternatives web page.

Under Water Code Section 10733.2, DWR is required to draft and adopt emergency regulations for the evaluation of GSPs and Alternatives, the implementation of GSPs and Alternatives, and coordination agreements. 

The GSP regulations were developed following a comprehensive, multi-phased public outreach and engagment process. Throughout 2015 and into 2016, DWR met regularly with numerous SGMA advisory groups and conducted public meetings and webinars to gather perspectives from other statewide stakeholders, partners, and local agencies. The input received was considered in the Draft GSP Emergency Regulations.

On May 18, 2016, the proposed GSP Emergency Regulations were presented to the California Water Commission for consideration of approval. The California Water Commission unanimously approved the proposed regulations, as written, and we submitted the Final GSP Emergency Regulations and the Notice of Proposed Emergency Rulemaking to the Office of Administrative Law.

GSP Regulation Documents

Approach for Developing GSP Emergency Regulations